* Vehicle Identification Number (VIN): The VIN contains a code that indicates the engine. You can use a VIN decoder online (many free services are available) to determine the engine size. The VIN is usually found on the driver's side dashboard, visible through the windshield.
* Engine Bay: Look for a sticker on the engine itself or on a component near the engine. This sticker often lists engine specifications, including displacement (engine size).
* Owner's Manual: Your owner's manual should specify the engine size on the first few pages, often in the specifications section.
* Vehicle Title/Registration: The title or registration paperwork *may* list the engine size, though this isn't always guaranteed.
The 2004 Ford Escape came with either a 2.0L or a 3.0L V6 engine. Locating one of the sources above will definitively tell you which one is in *your* specific vehicle.